<?php 
    include_once './libs/Smarty.class.php';
    $tpl=new Smarty;
    $tpl->left_delimiter="<!--{";
    $tpl->right_delimiter="}-->";
?>

<?php 
        require_once 'init.inc.php';
        $title="this is a title";
    $content="this is my content";
    $tpl->assign("title",$title);
    $tpl->assign("content",$content);
    $tpl->display("default/test.tpl");
?>

       <?php 
    include_once './libs/Smarty.class.php';
    class mySmarty extends Smarty{
        function mySmarty(){
            $this->Smarty();
            $this->template_dir="./templates/";
            $this->compile_dir="./templates_c/";
            $this->config_dir="./configs/";
            $this->cache_dir="./cache/";
            $this->caching=true;
            $this->left_delimiter="<!--{";
            $this->right_delimiter="}-->";
            $this->assign('app_name','mySmartyTest');
        }
    }
       ?>

<?php
    require_once 'init.inc.php';
    $tpl=new mySmarty;
    $title="this is a title";
    $content="this is my content";
    $tpl->assign("title",$title);
    $tpl->assign("content",$content);
    $tpl->display("default/test.tpl");
?>